Int 67 Fn 44  - Lim Ems - Map Memory                                       [m]

   AH = 44h
   AL = physical page number (0-3)
   BX = logical page number
       or FFFFh to unmap (QEMM)
   DX = handle

Return: AH = status (00h,80h,81h,83h,84h,8Ah,8Bh) (see #3319)

See Also: AH=69h